digitalFAQ.com Forums [Archives]

digitalFAQ.com Forums [Archives] (http://www.digitalfaq.com/archives/)
-   Video Encoding and Conversion (http://www.digitalfaq.com/archives/encode/)
-   -   HCenc: Aspect ratio in HC (http://www.digitalfaq.com/archives/encode/13513-hcenc-aspect-ratio.html)

Dialhot 05-30-2005 04:03 AM

Quote:

Originally Posted by maurus
If anamorphic DVDs are allways 4:3, then I must use allways (in AviSynth GripFit filter) source_anamorphic=false?

Did I tell than anamorphic DVD are not anamorphic ? I don't think so.
Of course "Anamorphic" DVD are anamorphic (so source_anamorphic=true).

As I said previously in the thread :
Quote:

Originally Posted by Dialhot
I can repeat that again and again and again : the only diff between an anamorphic DVD and a 4:3 one is NOT the A/R (4:3 in both cases) but the flag.

You have to put "source_anamorphic=true" into your script to tell to gripfit that the 16:9 flag has been setted in the source. Else it do not know that and it can't compute the resizing parameters correctly (the flag tells to gripfit "don't forget to turn this 4:3 picture into 16:9 before to crop and size it, else the characters will be coneheaded").

maurus 05-30-2005 04:15 AM

Ok, thanks.


-Maurus

Prodater64 07-15-2005 07:12 PM

Let's go again! :D

I need to know when to set 16:9 or 4:3 or what else (please do an extended answer) in TMPGEncoder, HC Encoder, NuEnc, QuEnc, CCE, and in general in any encoder that supports this option.

i.e.: NuEnc have option checks for 16:9, 4:3, 2:21 and 1:1, HC Encoder 16:9, 4:3 and don't know if any more.

I encoded 2 movies in 16:9 but dvd2avi show sources as 4:3. I play they in BSPlayer and, when select 16:9 they are not proportioned, but yes when select 4:3. Avicodec info 4:3 as 16:9 and 16:9 as 2:21. So I don't understand nothing.
Can anybody here make me understand it from here and for ever. :lol:
Thank you very much.

BTW: Can I keep those encoded files or I must to reencode it again?

Dialhot 07-15-2005 08:45 PM

You set 16:9 if you want something anamorphic. And that is for source from 1.77 to 2.35.
For the same sources you set 4:3 is you want them letterboxed.

Note1: even in anamorphic all these sources will have borders; but smaller than if 4:3 is choosed.

Note2: anamorphic is allowed only in MPEG2 and in res upper to 352*480(576)

Note3: forget about 2.21 that all encoder propose because THIS IS NOT SUPPORTED BY ANY STANDALONE !

Note4: selecting "16:9" or "4:3" in the encoder does not change ANYTHING to the A/R of the picture that is inside the box.

And for the last time remember that all these fucking stupid encoders are using 16:9 to say anamorphic AND all anamorphic streams ARE 4:3
(I say that differently ? Ok : when you select 16:9 in any encoder you want, it produces something that is 4:3. Funny isn't it ? I say funny because when I call that stupid, it seems to hurt some eyes)

Trust me, there is really nothing hard to understand. All is in the part in big letters above. The day all this developpers will call things their real name (I mean anamorphic and not 16:9) we will stop to have this kind of sentence :
Quote:

Avicodec info 4:3 as 16:9 and 16:9 as 2:21. So I don't understand nothing.
(except that this tool has perhaps a problem, I never use it to check the A/R)

when you say :
Quote:

I encoded 2 movies in 16:9 but dvd2avi show sources as 4:3. I play they in BSPlayer and, when select 16:9 they are not proportioned, but yes when select 4:3
I think that you mean you encoded 2 DVD with a picture that have 1.77 as A/R but that were not anamorphic. That is why DVD2AVI shows them as "4:3" (understand : 16:9 flag not raised in the stream). And that also means that the source were letterboxed. If you did not remove the bortders before to encode them, then that is normal that the movies are correctly proportionned only when you select 4:3 in the player, and not 16:9. And so, even if you selected "16:9" in the encoder ! (see note 4)

Prodater64 07-15-2005 09:24 PM

Quote:

Originally Posted by Dialhot
And for the last time remember that all these fuc@|@g stupid encoders are using 16:9 to say anamorphic AND all anamorphic streams ARE 4:3

I still couldn't understand that if you didn't used so big letters. Thank you. :D

Quote:

when you say :
Quote:

I encoded 2 movies in 16:9 but dvd2avi show sources as 4:3. I play they in BSPlayer and, when select 16:9 they are not proportioned, but yes when select 4:3
I think that you mean you encoded a source that has a 1.77 ratio, but you selected "4:3" in the encoder. Then you obtain something that DON'T have the 16:9 flag and so, DVD2AVI tells you they are 4:3.
(the box is 4:3 but what is inside is 16:9 with letterbox).
I meant what I said. In dvd2avi dvd source is showed as 4:3:

http://www.digitalfaq.com/archives/i...2005/07/10.png

I encoded it with anamorphic flag (16:9).
Source is not anamorphic.
avs line is GripCrop(704, 576, overscan=2, source_anamorphic=false)
Is it ok?

Dialhot 07-15-2005 09:42 PM

Quote:

Originally Posted by Prodater64
I encoded it with anamorphic flag (16:9).
Source is not anamorphic.
avs line is GripCrop(704, 576, overscan=2, source_anamorphic=false)
Is it ok?

That correspond to what you obtained, but not to what you wanted to obtain ;-). you'd forgotten to put "dest_anamorphic=true". So gripcrop computed the resize to have a 4:3 ratio. That's why the picture is well proportionned only when you select 4:3 into your player.

Note: with this mistake you can see that the word "16:9" put on the box (the stream) does not tell anything about what is inside the box (the movie itself). That's why is should be so much better to use "anamorphic" and "flat" (the official cinematographic words, where all this came from I remind you) in the encoders insteed of "16:9" and "4:3".

Prodater64 07-15-2005 10:11 PM

Sure, I agree.

Can I keep my work or I need to reencode it?

Zyphon 07-16-2005 02:16 AM

Quote:

Originally Posted by Dialhot
And for the last time remember that all these fuc@|@g stupid encoders are using 16:9 to say anamorphic AND all anamorphic streams ARE 4:3
(I say that differently ? Ok : when you select 16:9 in any encoder you want, it produces something that is 4:3. Funny isn't it ? I say funny because when I call that stupid, it seems to hurt some eyes)

Trust me, there is really nothing hard to understand. All is in the part in big letters above. The day all this developpers will call things their real name (I mean anamorphic and not 16:9) we will stop to have this kind of sentence :

I completely agree with you there Phil, I wish developers of encoding tools would use the correct name in this case Anamorphic because it is confusing and while the more experienced season users may understand it, it makes it harder for the noobs to understand about the aspect ratio.

I hope in future versions maybe the developers can use the proper name but I wouldn't hold my breath. :lol:

Dialhot 07-16-2005 08:54 AM

Quote:

Originally Posted by Prodater64
Can I keep my work or I need to reencode it?

You can keep your work but you should use DVDPatcher to remove the 16:9 flag on the stream else your standalone will switch to 16:9 mode and all will be distorted (the same way that when you set "16:9" in your media player).

Prodater64 07-16-2005 04:41 PM

Can I to encode a source no anamorphic as anamorphic with a good result?

Dialhot 07-16-2005 05:36 PM

Quote:

Originally Posted by Prodater64
Can I to encode a source no anamorphic as anamorphic with a good result?

I did one this afternoon ;-)


All times are GMT -5. The time now is 06:07 AM  —  vBulletin © Jelsoft Enterprises Ltd

Site design, images and content © 2002-2024 The Digital FAQ, www.digitalFAQ.com
Forum Software by vBulletin · Copyright © 2024 Jelsoft Enterprises Ltd.